new york state beekeeper jim doan saw it firsthand. >> i've worked in bees for now 46 years, and so i know what normal looks like, and what we've seen over the last 6 or 7 years is not normal. >> neybee ls has consuences f the ecomy. one-thd of fooproducedn th u.s. pends ononeybee pollinaon. >> we e puttinat risk several hundred billion dollars of product every yea it isignificant beuse the crops tt are pollated are some of them that really add diversity and vitality to our diet. honeee loss have be linkedo multip factors ke pestides, hatat deadation,alnutritn, pathoge, and vaoa mite inftations. for peicide manufacturer bayer crop science, the issue is clear. >> most experts agree that the single greatest threat to honeybee health is the varroa mi, an invive bloosucking pet that bh direct parasitizes young and adult bees and vectors bee diseases. where varroa mites are absent or well controlled, honeybees are thrivi. >> but jim says he knows why his bees are dying. >> we had a multitude of neonics that were showing up in our bees. it doesn't take much to kill a bee. >> neonicotinoids